Buy from here:
[Link: simplyautomate.co.uk]
or here:
[Link: letsautomate.com]?
or even here:
[Link: unbeatable.co.uk]

N.B. If you're thinking of using IR rather than RF, a 7000 from the States (given the prevailing exchange rate) might be a cheaper option.

Oh, and I would strongly advise you get a copy of this:
http://prontoguide.com/